The 3D crystal morphologies of NiO gas sensor and constantly improved sensing properties to ethanol

Nie, Chen; Zeng, Wen; Li, Yanqiong

doi:10.1007/s10854-018-0451-9

Cited by 17 publications

(7 citation statements)

References 44 publications

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“…NiO exhibited peaks at 37, 43, 62, 75, and 79°, corresponds to (111), (200), (220), (311) and (222) planes, confirming the presence of NiO nanoparticles in the composite structure (JCPDS no. 47-1049) . Varying calcination temperatures (300 to 500 °C) for NiO/GCN composites, denoted as NiO 300/GCN, NiO 400/GCN and NiO 500/GCN, revealed changes in the XRD pattern.…”

Section: Resultsmentioning

confidence: 99%

“…47-1049). 26 Varying calcination temperatures (300 to 500 °C) for NiO/GCN composites, denoted as NiO 300/GCN, NiO 400/GCN and NiO 500/GCN, revealed changes in the XRD pattern. The disappearance of the GCN peak at 2θ = 13 and 27°in NiO 500/GCN, along with the increased intensity peak of NiO, indicated the impact of calcination on the composite structure.…”

Section: Xrdmentioning

confidence: 99%

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High-Performance NiO/GCN Nanohybrids Synthesized under Different Thermal Conditions for Efficient Electrocatalytic Oxygen Evolution Reaction

Denisdon,

Senthil Kumar,

Rangasamy

2024

Ind. Eng. Chem. Res.

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Advancements in renewable energy technologies heavily depend on effective electrocatalysis, and the exploration of hybrid nanomaterials shows great potential for achieving improved catalytic performance. This research delves into the synthesis and characterization of nanohybrids incorporating graphitic carbon nitride (GCN) and nickel oxide (NiO) under varying thermal conditions for the oxygen evolution reaction (OER). A coprecipitation method produced the nanocomposite, analyzed through various characterization techniques. NiO/ GCN nanohybrids synthesized at lower temperatures displayed superior activity, attributed to the well-defined biotite and muscovite structure promoting efficient charge transfer. Higher temperatures synthesized nanohybrids led to reduced efficiency due to agglomeration-induced restricted active site accessibility. NiO/ GCN at 400 °C composite exhibited outstanding electrocatalytic activity with low overpotential, high current density, and durability. In a 24 h chronoamperometry study, the glassy carbon (GC) modified NiO/GCN electrode demonstrated commendable durability, requiring only 261 mV overpotential for a current density of 10 mA/cm 2 and a modest Tafel slope of 69.62 mV decade.

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Section: Resultsmentioning

confidence: 99%

Section: Xrdmentioning

confidence: 99%

High-Performance NiO/GCN Nanohybrids Synthesized under Different Thermal Conditions for Efficient Electrocatalytic Oxygen Evolution Reaction

Denisdon,

Senthil Kumar,

Rangasamy

2024

Ind. Eng. Chem. Res.

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“…47‐1049 standard card for bulk NiO. [ 59–61 ] Expectedly, the increased peak intensities indicated a larger presence of NiO over the catalyst surface with the increase of Ni loading.…”

Section: Resultsmentioning

confidence: 99%

Renewable Hydrogen Production with Steam Reforming of Ethanol Using Siliceous Mesocellular Foam‐Supported Nickel Catalysts

Murthy,

Rombaut,

Ling

et al. 2023

Adv Energy and Sustain Res

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Nickel (Ni) catalysts loaded on siliceous mesocellular foam (MCF‐S) are synthesized via the wet impregnation method with 3, 5, 10, and 15 wt% NiO loadings and different aging levels (no, partial, and full ageing) to determine how both factors affect the progress of the ethanol steam reforming (ESR) reaction. After extensive material characterization testing to determine material porosity, crystallinity, and Ni metal particle size and spatial location, as well as reaction testing at 300–700 °C and 4 H2O: 1 EtOH molar ratio, the fully aged 10 wt% Ni/MCF‐S possesses the strongest structural stability and catalytic activity, reaching 100% EtOH conversion and 68% H2 selectivity at 700 °C. The aging disperses and embeds more Ni nanoparticles within the walls of the mesopores, which promote the ESR reaction from easier diffusion and more active site contact within the pores. Furthermore, the catalyst reveals little signs of deactivation, as the structure remains virtually unchanged, and any coke formed is on the silica support and not over the Ni nanoparticles after the ESR reaction. Such results have demonstrated a proven applicability for ESR and a further need to research about aging effects toward improving structural properties and the catalytic reaction activity.

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“…Upon incorporation of gold (Au) nanoparticles, it led to more enhanced sensor performance toward ethanol and methanol, which were highly unprecedented. Since then, many porous nanostructures have been synthesized by the hydrothermal route including SnO 2 , − γ-Fe 2 O 3 , In 2 O 3 , − Fe 2 O 3 , WO 3 , , ZnFe 2 O 4 , NiO, − CuO, NiFe 2 O 4 , Ni–Bi 2 WO 6 , Ce 0.94 Zr 0.06 O 2 , and GdFeO 3 , where the hydrothermal route is one of the most feasible ways to synthesize porous nanostructures having different chemical compositions.…”

Section: Porosity Control In Smosmentioning

confidence: 99%

Review on Porosity Control in Nanostructured Semiconducting Metal Oxides and Its Influence on Chemiresistive Gas Sensing

Bulemo

Cheong

2023

ACS Appl. Nano Mater.

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Nanostructured semiconducting metal oxides (SMOs) hold the potential for playing a critical role in gas-sensing applications due to their interconnected nanograins, large surface area, and shorter diffusion length. The rational introduction of ubiquitous porosity in SMOs can enhance gas/air diffusion as well as the accessibility of nanograins and reactive sites. Although much work has been researched for adopting highly porous nanostructured SMOs to enhance gas sensing, no comprehensive review on porosity control has yet been presented. In this review, the latest porosity control methods for SMOs, structural properties, and their gas-sensing results are reported. Finally, perspective on porosity control methods and future directions are provided for further development and research of porous SMO-based gas-sensing nanomaterials.

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The 3D crystal morphologies of NiO gas sensor and constantly improved sensing properties to ethanol

Cited by 17 publications

References 44 publications

High-Performance NiO/GCN Nanohybrids Synthesized under Different Thermal Conditions for Efficient Electrocatalytic Oxygen Evolution Reaction

High-Performance NiO/GCN Nanohybrids Synthesized under Different Thermal Conditions for Efficient Electrocatalytic Oxygen Evolution Reaction

Renewable Hydrogen Production with Steam Reforming of Ethanol Using Siliceous Mesocellular Foam‐Supported Nickel Catalysts

Review on Porosity Control in Nanostructured Semiconducting Metal Oxides and Its Influence on Chemiresistive Gas Sensing

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